One really handy method for troubleshooting rogue Wordpress themes or plugins is to view the error_log file in the root web directory (www or public_html). This will reveal what the problem might be should Wordpress decide to display its 'useful' blank pages.
Spam is an absolute nuisance - especially when you receive repetitive contact form submissions regarding a product or service you have no interest in. This simple guide will help you get rid of spammers who submit rubbish through your website contact forms. Google reCaptacha